Silly Cocker question: my Benchmark slider came with no return spring installed. It looks like it just drops into a channel under the trigger plate? The back of that channel has a vertical set screw with no purpose I can discern... are you meant to lower that to insert the spring and then raise it to capture it?

Silly Cocker question: my Benchmark slider came with no return spring installed. It looks like it just drops into a channel under the trigger plate? The back of that channel has a vertical set screw with no purpose I can discern... are you meant to lower that to insert the spring and then raise it to capture it?